text-spacing-trim-start-002-ref.html

<!DOCTYPE html>
<meta charset="utf-8">
<style>
@font-face {
  font-family: halt-font;
  src: url('/fonts/noto/cjk/NotoSansCJKjp-Regular-subset-halt.otf');
}
#container {
  font-family: halt-font;
  font-size: 20px;
  text-spacing-trim: trim-start;
}
halt {
  font-feature-settings: 'halt' 1, 'vhal' 1;
}
</style>
<div id="container">
  <div>
    <halt>（</halt>国国国<br>
    <halt>（</halt>国国国<br>
    <halt>（</halt>国国国
  </div>
</div>

chromium/third_party/blink/web_tests/external/wpt/css/css-text/text-spacing-trim/text-spacing-trim-start-002-ref.html